JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" download="data.txt" id="download">Download da data</a>

JavaScript

var mt, data, download;
mt = 'data:text/plain;charset=utf-8,';
data = new Date();
download = mt + encodeURIComponent(data);

document.getElementById('download').setAttribute('href', download);